With just one day remaining until showtime, Joe Warren (pictured) was deemed ineligible to compete at Bellator 98 by the Mohegan Tribe Department of Athletic Regulation.

After reviewing the medical documentation submitted by Warren, the promotion decided to play it safe and postpone his Bantamweight Semifinal bout against Nick Kirk until further notice.

The 135-pounders were slated to co-headline the show.

“I’ve been fortunate to work with one of the best commissioners in the sport in Mike Mazzulli, and after carefully reviewing Joe’s medical documents, everyone agreed to err on the side of caution with the goal of ensuring our fighters safety,” Bellator CEO Bjorn Rebney expressed in a statement. “It was determined Joe would be unable to compete this Saturday at Mohegan Sun.

“Joe’s been with us since the beginning and as is the case with every fighter here, it’s incumbent on me to ensure Joe is 100% healthy and medically cleared to fight before he steps into the Bellator cage.”

We reached out to Bellator for additional information regarding Warren’s physical condition, but they were unable to provide specifics at this time.

The show will now go on with 12 bouts.

Spike.com streams the night’s prelims live beginning at 6PM ET/3PM PT. Spike will then broadcast the main card at 8PM ET/PT.